Process and apparatus for preparing synthesis gas by partial oxidation of a finely divided solid carbon-containing fuel
CA 2054492 A1 · Owner: Shell Canada Limited · Inventors: Van Der Burgt, Maarten Johannes
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process and apparatus for preparing synthesis gas by partial oxidation of a finely divided solid carbon-containing fuel. In an upflow entrained gasifier the gases leaving the reactor are cooled in a radiation or convection cooler located above the gasifier. In order to prevent the cooled gases to flow back into the gasifier part a restriction is provided between the gasifier and the cooler above. The gas velocity in the restriction should be at least 2 and maximum 30 times higher than the superficial upward velocity of the gases in the gasifier. VM2/T6064FF
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed October 29, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 29, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 29, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.